Conor McGregor's comeback fight in UFC could be bigger than the Floyd Mayweather bout if he takes on this fighter

Irish striker McGregor lost in the 10h round of a landmark boxing rules bout against Floyd Mayweather last year.

But his comeback fight in UFC could be even bigger — provided he fights Georges St-Pierre.

A fight between Conor McGregor and Georges St-Pierre would be the biggest fight of all time, according to St-Pierre's coach Firas Zahabi.

"It would be a super mega fight that everyone in the world would want to see," Zahabi told YouTube channel Fight Hub TV. "It would be a bigger fight than Floyd Mayweather and McGregor — it would be the biggest fight in history."

Renowned as much for his epic putdowns as he is for his concussive punching power, McGregor is arguably the most famous fighter on the UFC roster.

He is a former featherweight champion and won the lightweight title when he knocked out Eddie Alvarez in 2016.

But he is not the only double champion in UFC history as he shares that honour with former welterweight and middleweight title holder St-Pierre.

"He grew up in that. McGregor is very good at keeping distance and when you cross that distance he punches you. Georges understands that game so well. Plus Georges is much more schooled in boxing, wrestling, and jiu-jitsu. So I put it all on Georges side.

"But McGregor has a better left, a better cross, than Georges. I give him that. It's just highly unlikely, not impossible, but highly unlikely, that he hits him with it."